Tell me how the experiment foam fight combines with two or more substances to form something else. If it is a physical change on
ly, tell me how the molecules only changed states of matter, and did not change in the molecule. So I wish is the chemical change and change is because when you mix two colors and make another color into when you pour baking soda.
mixture is created when two or more different substances are physically combined and can be separated back into its original substances. A chemical reaction occurs when two or more substances are combined to form a new substance and cannot be separated back into its original substances.
The answer is a, because the question is referring to partial pressures. Partial pressures are a mere sum, no halving or doubling of anything is necessary.